OK, im not quite getting the answers i am looking for here. i know if i told you all the application it would help, but i am trying to keep it a secret. but here is what i will do:
Anyone you can provide me with vital development information for this project i am working on will recive the new unit (if desired) at cost (right now in the neighborhood of ~ $150.00 or so. i am planning selling it for around $300. it all depends on the end product.
This is what i will tell you. it will involve a new Tach, like none you have ever seen. and a new speedo like none you have ever seen. along with other concepts you probably haven't even considered.
So this is what i need. I need to know what kind a signal the tach and speedo sensors send to the ECU. (ie: pulse, staight voltage... and so on) i need to know exactly what the volatges are. if i could find the schematic for an aftermarket tach i could probably pull it off. but any help anyone can provide will be great. the project is geared more towarded MT celicas, mainly the GT at first, but all it will require is a quick reprogram for the GTS. it will also work in a Auto Celica, but will be more Eye candy than a useful tool. i know this is all very vauge, but it is all i can give (i have to find a way to make money some way) i will also looking for people to "beta" test the product in the end, but that is a way off. thanks for your help